<!DOCTYPE HTML>
<html class="reftest-wait">
<body>
<div style="-moz-column-count:2; column-count:2; width:300px; height:100px;">
  <div id="o" style="opacity:0.5; width:100px; height:200px; background:lime;">
	<div id="d" style="height:50px; width:80px; background:green; padding:2px">Text</div>
  </div>
</div>
<script>
var o = document.getElementById("o");
var d = document.getElementById("d");
document.body.getBoundingClientRect();
o.style.opacity = 0.8;
function doTest() {
  o.style.opacity = 0.9;
  document.documentElement.removeAttribute("class");
}
window.addEventListener("MozReftestInvalidate", doTest, false);
</script>
</body>
</html>
